How to winterize perennials in pots?
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how do you winterize them..it's get below zero here. can I leave them potted out on the balcony?
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Move them as close to the house for protection,cover the roots lightly with mulch
You should leave them on a south facing wall; preferably in a corner protected from the wind. If you have some old windows you could could mock up a mini greenhouse.
Bury the pot (as if you're planting the plant) and cover deep with mulch / chopped leaves until spring. Remove pot in spring with plant (hopefully) intact.
Oh... Where Are you that it gets so cold... and what plants? Both are relevant to your question.
The majority of perennials I would hesitate to leave out as there is probably not enough soil to stop the roots from freezing....some greenhouses/nurserys will store your planters over the winter for a fee...I would investigate or ask a friend with a garden if you could borrow a section over the winter, plant your perennials and repot them into planters in the spring.
Plant pot and all in ground. Take out in spring.
No they probably will di, because they need to be in the ground.
without a yard, you could try planting your pot (1qt) in another pot (1gal) and packing them in a heavy plastic bag. Then cover with straw / compost / ground leaves... And close the bag with minimal airspace. Then store in a sheltered place. the pot sizes are for proportional examples.